TRANS. N. S. INSTITUTE SC M VOL. X. 



PLATE IV. 



Photograph by DR. A. H. 



TRANSVERSE SECTION OF VASCULAR BUNDLE FROM CORE 

 OF STIGMARIA. 



Magnified 16 diameters. 



(TO ILLUSTRATE PAPER BY MR. POOLE.) 

 Face p. j<f6. 



